Question

What is false in an ideal electric circuit?
A) Internal resistance of the battery is zero.
B) Resistance of connecting wires is zero.
C) Wires are heated.
D) EMF of the cell remains the same.

Answer 1

Hint: In ideal electric circuits we talk about the energy source and the energy inhibitors such as (lamp, tube light, fan, motor, laptop, computer, etc.) but we never talk about the heating of the wire as the energy inhibitors.

Complete step by step answer:
An electric circuit is composed of individual electrical components such as resistors, transistors, capacitors, inductors & diodes connected by each other by conductive wires.
There are basically two types of electric circuits
1. Series circuits
2. Parallel circuits
They differ in the number of loops through which current can flow.
In series circuits, there is only one loop through which current can flow.
In parallel circuits, there is more than one loop through which current can flow.
When we are dealing with an ideal electric circuit we assume that the Internal resistance of the battery is zero.
When we are dealing with an ideal electric circuit we assume that the resistance of connecting wires is zero.
As time elapsed we assume that the EMF of the cell remains the same.
But when we talk about the heating of the wire, in practical situations it happens but when we deal with the ideal electric circuit we assume that wires do not heat in the electrical circuit.
Also, heating of the wire signifies the loss of electrical energy as heat energy.

Hence option (C) is the correct answer.

Note:
The electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator device that uses the current such as lamps, fan, tube light, motor, rotor, or computers and the connecting wires or the transmission lines.
Two of the basic laws that mathematically describe the performance of electric circuits are Ohm’s law and Kirchoff's law.