In a series connection, you have a battery, a 10 Ohm resistor, a light bulb, and

Question

In a series connection, you have a battery, a 10 Ohm resistor, a light bulb, and then a 15 Ohm resistor, in that order. Which of the following is/are true? More than one answer may be correct.

The light bulb would become dimmer if the net resistance in the circuit is decreased.

The voltage across the 15 Ohm resistor is greater than the voltage across the 10 Ohm resistor.

The light bulb would become brighter if the net resistance in the circuit is decreased.

The current through the 15 Ohm resistor is greater that the current through the 10 Ohm resistor.

The voltage across the 15 Ohm resistor is the same as the voltage across the 10 Ohm resistor.

Explanation / Answer

OPtion A

If resistance is decrease then current in circuit increase and bulb glow brighter so this statment is FALSE

Option B

Vooltage across resistor is V = I*R

so larger the resistor larger the voltage across it as current in series connection is same for all resistors. so The voltage across the 15 Ohm resistor is greater than the voltage across the 10 Ohm resistor. it is TRUE

Option C

The light bulb would become brighter if the net resistance in the circuit is decreased. is TRUE

option D

Current in botyh resistance is same as both are in series. FALSE

option E

The voltage across the 15 Ohm resistor is the same as the voltage across the 10 Ohm resistor.

FALSE

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