Q6 of 44 Page 85

The three resistance of resistance 5 Ω, 10 Ω and 30 Ω are connected with a 12 V battery in parallel. Determine (a) total current in the circuit (b) equivalent circuit resistance.

Given

Battery = 12V


Resistance (parallel) = 5 Ω, 10 Ω and 30 Ω


Formula used


Parallel Resistance formula



Ohm’s Law


V = IR


V = voltage


I = current


R = resistance


Calculation


To solve part (a) we first have to solve part (b)


(b) Equivalent resistance




Hence, R = 3 Ω


(a) Total current



I = 4 A


More from this chapter

All 44 →
6

If 400 mA current flows through the bulb for 1 minute, how many electrons will pass through it?

 6

The 1800 C electric charge is passing through an electric bulb in one hour. How much current will pass through an electric bulb?

 6

As shown in the figure the resistance are connected with a 12 V battery. Determine (a) Equivalent circuit resistance (b) Current flowing through the circuit.

 6

Find the electric current in the following circuit: