Question

The potential Difference between the terminals of an electric heater is 75 V when it draws a current of 5 A from the source . what current will be heater draw ,if the potential Difference is increased to 150 V​

Answer 1

Answer:

I ohms law v=ri

so 75=5*r

r=15ohm hence it's resistance is 15ohm and it is constant now for new set up 150=i*15=10A

so it's current is 10 ampere

Answer 2

Answer:

Given:
V = 75.
I = 5 A

R = V/I
= 75/5
= 15

When potential difference increases to 150 V:

I = V/R
= 150/15
= 10 A

Final Answer : 10 A current will be drawn by the heater.

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