Question

An electric circuit has a 30 V battery and a resistor of 90 ohm. Then, the current in the circuit will be:

• A. 30 A
• B. 0.33 A
• C. 0.11 A
• D. 1.30 A

Answer 1

The correct option is B

0.33 A

Given:
Voltage $V=30volt$
Resistance $R=90\Omega$
According to Ohm’s law, V = IR or,
$R=\frac{V}{I}$

Thus, $I=\frac{V}{R}=\frac{30}{90}=0.33A$