Question

When a 40V battery is connected across an unknown resistor there is a current of 100 mA in the circuit. Find the value of the resistance of the resister

Answer 1

Answer:

400 ohms

Explanation:

We know that

$v = ir$

V = 40 V

I = 100mA

therefore

R is

$\frac{40}{0.1} = 400 \: ohms$

Answer 2

Answer:

400 ohm

Explanation:

given V =40V

I =100 mA

=0.1A

we know that,V=IR

THEREFORE R= V/I

=40/.1

=400/1

=400 ohm

so R is 400 ohm

hope it helps