Physics
Assertion (A) : A switch will serve the purpose of making and breaking a circuit when it is connected to the neutral wire.
Reason(R) : Neutral wire is at zero potential.
- Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion
- Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion
- Assertion is true, but the Reason is false.
- Both Assertion & Reason are false.
Answer
Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion
Explanation :
Assertion (A) is true : A switch can be used to open and close a circuit, regardless of whether it's connected to the live or neutral wire. However, for safety reasons, the switch should be connected to the live wire.
Reason (R) is true : It is true that the neutral wire is at zero potential, but this does not justify its use for a switch. The function of a switch is to break the live wire, thereby completely disconnecting the circuit from the power source.
Related Questions
Data:
mass =10 g
quantity of heat supplied =120 J
rise in temperature = 10 °CStatement A : The heat capacity of the substance is 12 J/g.
Statement B : The specific heat capacity of the substance is 1.2 J/gK.
- Only statement A is correct.
- Only statement B is correct.
- Both statements A and B are correct.
- Both statements A and B are incorrect.
Given that the resistivity of Gold and Platinum is 2.1 x 10-8 ohm.m and 10.5 x 10-8 ohm.m, respectively, which is the correct statement?
Statement A : 5 metres of platinum wire will have the same resistance as one metre of gold wire.
Statement B : Gold wire of 1 cm radius will have the same resistance as platinum wire of 5 cm radius.
- Only statement A is correct.
- Only statement B is correct.
- Both statements A and B are correct.
- Both statements A and B are incorrect.
The given rods will attract each other when:
- A and C are connected to positive terminal of the battery.
- B and C are connected to the positive terminal of the battery.
- A and D are connected to the positive terminal of the battery.
- A and D are connected to the negative terminal of the battery.