Ask Current Electricity question free
×
Current Electricity Free Doubts and Solutions
CBSE - XII Science - Physics - Current Electricity
A potentiometer wire carries a steady current the potential difference across 70cm length of it balances the potential difference across a 2 ohm coil supplied by a cell of emf 2v and unknown internal resistance r when 1 ohm coil is placed in parallel with the 2 ohm coil a length equal to 50 cm of the potentiometer wire is required is balance the potential difference across the parallel combination find the value of r
Asked by gnivedita2110
6th August 2020,
11:46 AM
CBSE - XII Science - Physics - Current Electricity
what is this i could'nt understand
Asked by henrycherukara
28th June 2020,
8:17 PM
CBSE - XII Science - Physics - Current Electricity
plz explain
Asked by nagavalli72003
23rd April 2020,
2:28 AM
CBSE - XII Science - Physics - Current Electricity
A circular coil of radius 10 cm and resistance 2 Ω is placed with its plane perpendicular to the horizontal component of the earth’s magnetic field. It is rotated about its vertical diameter through 180°. Estimate the charge passed through the coil. Horizontal component of the earth’s magnetic field at the place is 3.0 × 10–5 T.
Asked by sudesh.sudeshghawri
1st March 2020,
5:33 PM
CBSE - XII Science - Physics - Current Electricity
What happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current ?
Asked by pbsingh120
8th February 2020,
10:17 AM
CBSE - XII Science - Physics - Current Electricity
To find the power when capacitors are given
Asked by alanpeter9611
1st March 2019,
12:39 AM
CBSE - XII Science - Physics - Current Electricity
You are going in a car.It is about to lightning,how will you protect yourself?
Asked by agarrajeev06
9th January 2019,
5:17 PM
CBSE - XII Science - Physics - Current Electricity
Expert,
I am a CBSE class 12 student. My query is regarding which book I should follow. My teachers are following different guides and the derivations they teach are different from those of the text books. Moreover textbook derivations are short and complicated.Which one should I follow? My doubt is with respect to CBSE class 12 examination.
Asked by Anishma Joseph
24th November 2016,
7:43 PM
CBSE - XII Science - Physics - Current Electricity
Series combination of 2 resistors R and r is connected to constant voltage source Find the value of the resistance S which should be connected in parallel with r so that current through r becomes half the previous value
Asked by manasd
6th November 2016,
9:40 PM
CBSE - XII Science - Physics - Current Electricity
Sir, I find difficulty in understanding the given answer.Can you please simplify and explain it?
Asked by Rajeev
19th February 2016,
9:12 PM
