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CBSE - XII Science - Physics - Current Electricity
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Asked by whoami230302
17th January 2023,
3:48 PM
CBSE - XII Science - Physics - Current Electricity
What is shunt
Asked by hv200613
20th October 2021,
11:36 AM
CBSE - XII Science - Physics - Current Electricity
is there any useful of ohms law?
Asked by donthagounisaigoud
5th November 2020,
1:47 PM
CBSE - XII Science - Physics - Current Electricity
what is ohms law
Asked by yeshuyashwanth219
20th July 2020,
7:00 PM
CBSE - XII Science - Physics - Current Electricity
What is ohm's law in vector form?
Asked by neelam.vishva
25th January 2019,
9:14 PM
CBSE - XII Science - Physics - Current Electricity
The I-V characteristics of resistor are observed to deviate from a single line for higher values of current. Why?
Asked by vinitapahel123
13th December 2015,
12:30 PM
CBSE - XII Science - Physics - Current Electricity
Nowadays we have heard that one can charge their mobile phones with the help of soil. is this related to the ohmic devices. does the soil folows ohms law?
Asked by ayush.mathur
26th June 2015,
8:44 PM
CBSE - XII Science - Physics - Current Electricity
why does the current flow from negative to positive ?
why does the current flow in the direction opposite to electrons in the circuit?
Asked by Anju Charan
11th June 2015,
3:23 PM
CBSE - XII Science - Physics - Current Electricity
[ ans =300C]
Asked by yash.bisht9910
29th May 2015,
7:55 PM
CBSE - XII Science - Physics - Current Electricity
a wire of length 'l' cross-sectional area 'A' and resistance 'R' is doubled o itself. then find its new resistance.
Asked by Dave Agresha
27th May 2015,
9:08 AM
CBSE - XII Science - Physics - Current Electricity
Two pendulums of lengths in the ratio 9:1 start oscillating at t=0.they will again be in phase after the shorter pendulum has made n oscillations the value of n is
A]2 b]3 c]1\2 d]3\2
Two pendulums of lengths in the ratio 9:1 start oscillating at t=0.they will again be in phase after the shorter pendulum has made n oscillations the value of n is
A]2 b]3 c]1\2 d]3\2
Asked by shubham.padamwar.3
25th April 2015,
9:12 PM
CBSE - XII Science - Physics - Current Electricity
What is the percentage change in the resistance of german-silver wire when its temperature changes from 25 degree celsius to 50 degree celsius , 
per degree celsius
per degree celsius
Asked by Shashank
15th November 2014,
7:29 PM
CBSE - XII Science - Physics - Current Electricity
the masses of three wires of copper wire are in the ratio 1:3:5 and their lenght are in the ratio 5:3:1.The ratio of their resistances is how much?
Asked by Shalini
5th August 2014,
8:38 PM
CBSE - XII Science - Physics - Current Electricity
What is the microscopic form of ohm's law ?
Asked by NAKSHATRA
4th August 2014,
6:36 PM
CBSE - XII Science - Physics - Current Electricity
we knw that curent is scalar quatity but current density is vector quantity instead ????why ???how????????????????/////////
Asked by Samson Shaji Varghese
3rd July 2014,
7:35 PM
CBSE - XII Science - Physics - Current Electricity
When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Is Ohm’s law true for all conductors? Does the formula V=IR defines Ohm’s law?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Two wires A and B are of same material, have same area of cross-section and have their length in the ration 2: 1. What will be the ratio of current flowing through them if the same potential is applied across the length of each of them?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
What is the ratio of resistances of two conductors of same material having length l and 2l and radius r and r/2 respectively?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Two wires of equal lengths, one of copper and other nickel have the same resistance. Which wire is thicker?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Find the resistivity of a conductor in which a current density is and electric field of 15Vm-1 is applied on it.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
What is conventional current?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Electric current has both magnitude and direction but it is not a vector quantity. Why?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
Why solid conductors conduct electricity when placed in an electric field?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
What kind of charges constitutes the electric current?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Physics - Current Electricity
What will be the resistivity of a wire if it is stretched to double of its original length without loss of mass?
Asked by Topperlearning User
17th April 2014,
1:49 PM
