Answer: Option A. -> 1 A
:
A
Given,
Resistance values,
$R1=R2=R3=3\Omega$
$R4=R5=0.5\Omega$
Here the resistances $R1$ and $R2$ are in series. Let the equivalent resistance of this combination be $R_{12}$.
$R_{12}=R1+R2$
$R_{12}=3+3=6\Omega$
Now $R_{12}$ and $R3$ are in parallel.
Let the equivalent resistance of this combination be $R_{123}$.
$⟹\frac{1}{R_{123}}=\frac{1}{R_{12}}+\frac{1}{R3}$
$\frac{1}{R_{123}}=\frac{1}{6}+\frac{1}{3}$
$R_{123}=2\Omega$
Now, $R4,R_{123}$ and $R5$ are in series.
Let the equivalent resistance of this combination be R.
$⟹R=R4+R_{123}+R5$
$R=0.5+2+0.5\Omega$
$R=3\Omega$
Using Ohms law,
$I=\frac{V}{R}$
$I=\frac{3V}{3\Omega }=1A$

Answer: Option A. -> Voltmeter
:
A and D
A voltmeter can measure the electric potential difference between two points. A voltmeter is connected in parallel to measure the potential difference between two points.
A multimeter is a device which can measure potential difference, DC voltage, AC voltage, current and resistance of a conductor. Hence voltmeter and multimeter can be used to measure the electric potential difference between two points.
Ammeter and Galvanometer is used to measure current in the circuit.

Answer: Option A. -> increases
:
A

With the increase in temperature, the random motion of electrons increases. As a result, the number of collisions of electrons with the positive ions increases in a metal. Hence, the resistance of a metal increases with increase in temperature. 

Answer: Option A. -> ohmic
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Answer: Option A. -> 2 W
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Answer: Option A. -> more resistance
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Answer: Option A. -> circuit breaker
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Answer: Option A. -> I(current)×R(resistance of the conductors)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Answer: Option C. -> neutral wire
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Answer: Option C. -> plastic cover
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