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Question

How much current will a heating device draw from a 180 V source, if the resistance of the geyser is 100 Ω?



Your Answer
A

4 Ampere

Correct Answer
B

1.8 Ampere

Your Answer
C

1 Ampere

Your Answer
D

8 Ampere


Solution

The correct option is C

1.8 Ampere


Given, V = 180 V (voltage of the source) and R = 100 Ω (Resistance of the geyser)
From Ohm's law, we know that V = IR
Or, I=VR
In the question, V=180 V and R=100 Ω
Current(I)=180100= 1.8
Hence the heating device draws a current of 1.8A.

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