Question

what is the resistance of a clock if it has a current of 0.30 a and runs on a 9.0-v battery? 0.033 2.7 9.3 30

Answer 1

Answer : Resistance of a clock is  $30\ \Omega$.

Explanation :

It is given that :

The current flowing in the clock, I = 0.3 A

Potential difference, V = 9 V

According to Ohm's law :

$V=I\times R$

So,

$R=\dfrac{V}{I}$

$R=\dfrac{9\ V}{0.3\ A}$

$R=30\ \Omega$

$\Omega$ is the SI unit of the resistance given by a physicist Georg Simon Ohm.

So, the correct option is (d) i.e. $30\ \Omega$

Hence, this is the required solution.

Answer 2

R = V/I =  9 / 0.3

R = 30 ohms.