Question

an electric gadget draws a current of 200mA from a battery of 12V. Find its resistance​

Answer 1

Answer:

60 ohm

Explanation:

According to the given question,

Current = I = 200×10^-3 amp = 0.2 A

Voltage = V = 12 V

Resistance = R = ?

And we are asked to find the resistance of that gadget.

From ohm's law,

• V = IR

By putting the values we get,

• 12 = 0.2 × R

• R = 12/0.2

• R = 60 ohm

So the given gadget has resistance of 60 ohm if the current passing through it is 200mA and potential difference between its two end is 12 V.

Answer 2

Given:

Current mA = 200

Voltage = 12V

To Find:

Resistance

Solution:

Firstly,

      converting current mA into A

       = 200× 10³

       = 0.2A

Now, using Ohm's law

V = IR

⇒ 12 = 0.2 ×R

⇒ R = 12/0.2

⇒ R = 60 Ohm

Therefore, resistance is 60Ohm.