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CBSE Class 12-science Answered

H=V^2/R t . Heat produced per unit time (h): h=V^2/R . Appliances are connected in parallel in home, V is constant ⇒h∝ 1/R . So, How one explains that High Resistance Wires (Such as Nichrome) are used as heating elements in various appliances?
Asked by malikshailav | 15 Aug, 2020, 04:59: PM
answered-by-expert Expert Answer
H equals I squared R t F o r space a space p a r t i c u l a r space a p p l i a n c e space space h e a t space p r o d u c e d space i s space d i r e c t l y space p r o p o r t i o n a l space space r e s i s tan c e. H e a t space d e p e n d s space o n space c u r r e n t comma space R e s i s tan c e comma space t i m e space f o r space w h i c h space t h e space c u r r e n t space h a s space b e e n space p a s s e d.
Answered by Utkarsh Lokhande | 20 Aug, 2020, 04:06: PM

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CBSE 12-science - Physics
A dumbbell consists of two masses A and B each of mass m joined by a light rod of length l with mass B attached to a suspension point O by a light rod of length l as shown in figure. Find the minimum required speed with which mass A to be projected horizontally so that the system completes the vertical circular motion.
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
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