Question

How will the current change in a series circuit if more resistors are added to it?

A.
The current will increase.
B.
The current will decrease.
C.
The current will double for each resistor added.
D.
The current is not affected by the number of resistors.

Answer 1

Answer:

current increases

Explanation:

In a series circuit, adding more resistors increases total resistance and thus lowers current. But the opposite is true in a parallel circuit because adding more resistors in parallel creates more choices and lowers total resistance.

Answer 2

Answer:

B.) Current will decrease

Explanation:

Use Ohm's Law:

V = IR

V - Potential difference between terminals of battery

I - Current in circuit

R - Net Resistance of resistor

It can be observed that 'V' remains constant, depending only on the battery. When 'R' is increased, then 'I' must change to keep 'V' constant.

$V = IR\\R = V/I$

R ∝ 1/I

So, as R increases, I must decrease to keep 'V' constant.

Therefore, current will decrease.

Hope it helps!