Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d39273b230584979bc4.jpg' /> In In the above figure, an electric lamp, whose resistance is 20 Ω, and a conductor of 4 Ω resistance are connected to a 6 V battery. Calculate the potential difference across the conductor.

Question 2 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d36273b230584979bc0.PNG' /> Above image is the symbol of ______ in circuit diagram.

Question 3 :
In a schematic diagram of a circuit consisting of a battery of three cells of 2 V each, a 5 ohm resistor, a 8 ohm resistor and a 12 ohm resistor and a plug key, all connected in series and put an ammeter to measure the current through the resistors and a voltmeter to measure the potential difference across 12 ohm resistor. What will be the equivalent resistance?

Question 4 :
Which uses more energy, a 250 W TV set in 1 h or a 1200 W toaster in 10 min?

Question 5 :
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. What is the value of the resistance of the resistor?

Question 7 :
An electric kettle consumes 1 kW of electric power when operated at 220 V . A fuse wire of what rating must be used for it ?

Question 8 :
A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 $\Omega$ resistance. What is the current when they are used in series?

Question 10 :
How is voltmeter connected in circuit to measure the potential difference between the two points?