High School

A six volt battery is connected to a three and a six ohm resistor as shown in the circuit diagram. What is the voltage drop across the 6 ohm resistor?



A

1 V


B

3 V


C

6 V


D

12 V

A six volt battery is connected to a three and a six ohm resistor as shown in the circuit diagram What is the voltage drop

Answer :

6 V drop occurs across the 6 ohm resistor in the parallel circuit diagram. The correct answer is C.

Since this parallel combination is connected with a cell, the potential difference through each resistor will be 6 volts. Now using I=V/R,

Current through 3 ohm resistor = 6/3 = 2 V

Current through 6 ohm resistor = 6/6 = 1 V

And the total current will be the sum of individual current in each resistor using Kirchoff’s junction law, Total current = 3 ampere

Since it is parallel combination the current passing across two resistors can differ but the voltage drop will remain the same.

To know more about resistance:

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