Question

a bulb draws current 9A when connected to a 12V battery find 1) resistance of the bulb 2) charge flowing in 2s​

Answer 1

Answer:

• 1.33 Ω.
• 18 C.

Explanation:

Given: Electric current (I) = 9 A

& Voltage (V) = 12 V, Time taken (t) = 2 sec

To find: Resistance (R) & Charge (Q)

Solution: Using Ohm's law:

=> V = IR => 12 = 9(R)

=> R = 12/9 = 1.33 Ω

Now, charge (Q) = It

=> Q = 9(2) => 18 C

• Hence, the resistance of the bulb is 1.33 Ω and charge flowing in 2 sec is 18 C.