A battery of 15 volt is connected to a parallel group of resistances of 4, 10 and 20 ohm. The current in the circuit will be (A= ampere)

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Mathematics : Math Misc

A battery of 15 volt is connected to a parallel group of resistances of 4, 10 and 20 ohm. The current in the circuit will be (A= ampere)

A. 6 A

B. 4 A

C. 8 A

D. 2 A

Solution

A. 6 A

Explanation

=++

=

R=

According to Ohm’s Law,

V=IR

I=