Choose the correct statement(s) in the case of a voltaic cell.

(A) The material used in the cathode is zinc and that in the anode is copper.

(B) The electrolyte used is dilute sulphuric acid.

Choose the correct statement:

When a positively charged body is placed on the ground,

(A) The electrons flow from the ground and neutralize the charge.

(B) The electrons flow from the ground and charge it negatively.

A magnetic needle placed near a current-carrying conductor deflects due to the

Which of the following statements is incorrect?

The commercial unit of electrical energy is

The bulbs in houses are connected in _____.

Arrange the following steps in sequential order to demonstrate the magnetic effect of the electric current using a magnetic compass.

(A) Wind an insulated conducting wire around the magnetic compass such that the axis of the coil is directed along the east-west direction and connects the free ends of the wire to a cell through a switch.

(B) Take a magnetic compass.

(C) When current flows through the conducting wire, it behaves as a magnet and deflects the compass needle.

(D) When the switch is closed, the magnetic needle in the compass deflects from its initial position and when the switch is opened, the needle comes back to its initial position.

Two electric bulbs of $100 \mathrm{W}$ each is used for $10 \mathrm{hours}$ in the month of June. Write the following steps in sequential order to find the number of units of electricity consumed in the month of June.

(A) The number of units of electricity consumed by both bulbs in the month of June is the total electrical energy consumed by bulbs expressed in $\mathrm{W} \mathrm{h}$ divided by $1000 \mathrm{W} \mathrm{h}$.

(B) Note the rated power of each electric bulb, time of electrical consumption of each bulb per day from the given data.

(C) We know, one electrical unit$=1 \mathrm{kW} \mathrm{h} \mathrm{or} 1000 \mathrm{W} \mathrm{h}$.

(D) Calculate the amount of electrical energy consumed by both the bulbs in the month of June using, (sum of electrical power of both the bulbs) $\times$(time of consumption in one day) $\times \left(30 \mathrm{days}\right)$.