List of top Science Questions on Electricity asked in UP Board X

Calculate the equivalent resistance of three resistors \( R_1, R_2, R_3 \) connected in parallel.

Define Ohm’s Law and describe an experiment to verify it.

Choose the correct alternative by matching the physical quantities in column (B) with the units in column (A): \[ \begin{array}{|l|l|} \hline \textbf{A} & \textbf{B} \\ \hline (1) \text{Ohm} & (ii) \text{Electric resistance} \\ \hline (2) \text{Watt} & (iii) \text{Electric power} \\ \hline (3) \text{Ampere} & (i) \text{Electric current} \\ \hline (4) \text{Volt} & (iv) \text{Electric potential difference} \\ \hline \end{array} \]

Three wires A, B and C are emerging out from the main source of a house. What will be the name, function, and colour of the insulation for each wire?

The resistance of a conductor depends on which factors and how? The resistance of a wire is \( R \). What will be the resistance of the wire when the wire is of double length and half the radius of the same material?

In which of the following wires of domestic electric distribution is the fuse wire connected in series?

In a conductor, 10 ampere of current is flowing. What will be the amount of charge flowing in 2 seconds corresponding to it?

If the units of power, work, and time are represented by \( x_1, x_2, x_3 \) respectively, then which of the following relations is correct?

How many wires are used in domestic electrical circuits? Write the names of each and their colours of insulation.

How are voltmeter and ammeter joined on passing current in a resistor?

A refrigerator of 500 watts is used for 12 hours every day. How much kilowatt-hour energy is consumed by the refrigerator for 30 days?

What is the unit of specific resistance? A resistance of 25 \( \Omega \) is connected to a 12-volt battery. Calculate the heat energy in joules generated per minute.

Write the names of the wires used in the domestic electrical circuit and also write the colours of the insulating wires.

If three resistors of different values of resistance are connected in a series combination, then all of them will definitely have the same value of:

In an electrical circuit, the unit of potential difference between the ends of a resistance is:

The resistances 2Ω, 3Ω, and 5Ω are joined in series. If the two ends of the combination are joined to a potential difference of 30 volts, then find the potential difference between the ends of each resistance.

Write down the working and colours of the insulation of the wires used in the domestic electrical distribution circuit:
(i) Live wire
(ii) Earthing wire
(iii) Neutral wire

The filament in an electric bulb is made of:

The transformation in an electric cell is:

Two wires of resistances $R_1$ and $R_2$ are joined in parallel. Their equivalent resistance will be:

Two wires of resistances \( R_1 \) and \( R_2 \) are connected to a cell in parallel. If the currents flowing in them are \( i_1 \) and \( i_2 \), and the heats produced in them are \( H_1 \) and \( H_2 \), respectively, per second, the ratio of heat is:

Ampere-second is the unit of:

What is Ohm's Law? Explain the verification of this law with the help of a circuit diagram.