Question

When a current of 2ampher of is allow to passes through of a wire of resistance 4ohm for 20min. Then what amount of heat will be produced ?​

Answer 1

Explanation:

You take the basic formula of E = I x R, solve for R -> R = E / I. In other words, take the required voltage drop (in volts) and divide by the current (in amps) in the resistor and determine the resistance (R) in ohms.

Answer 2

Explanation:

given current I= 2A

Resistance R= 4 ohm

time t= 20 min = 1/3 hr

we know that Heat H = I²Rt

= (2)²×4×1/3= 16/3= 5.33J/s