Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cde273b230584979b5a.JPG ' /> In the above figure, the proper representation of series combination of cells obtaining maximum potential is -

Question 2 :
How much heat is generated while transferring 96000 coulomb of charge in one hour through a potential difference of 50 V?

Question 4 :
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be

Question 5 :
The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 120 V?

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d32273b230584979bbb.PNG' /> Above image is the symbol of ______ in circuit diagram.

Question 7 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d33273b230584979bbc.PNG' /> Above image is the symbol of ______ in circuit diagram.

Question 8 :
Compute the heat generated while transferring 96000 C of charge in one hour through a potential difference of 50V?

Question 9 :
The resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?

Question 10 :
An electric motor takes 5 A from a 220 V line. What is the power of the motor?

Question 11 :
How is voltmeter connected in circuit to measure the potential difference between the two points?

Question 12 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d3a273b230584979bc5.jpg' /> In the above diagram, the resistors $R_{1},R_{2},R_{3}$ have the values 5 Ω, 10 Ω, 30 Ω, respectively, which have been connected to a battery of 12 V. Calculate the current through $R_{1}$.

Question 13 :
Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source?

Question 14 :
A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What is the current when the two coils are used in series?

Question 15 :
Which uses more energy, a 250 W TV set in 1 h or a 1200 W toaster in 10 min?

Question 16 :
Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V?

Question 17 :
An electric lamp of 100 ohm, a toaster of 50 ohm and a water filter of resistance 500 ohm are connected in parallel to a 220 V source. What is the current through an electric iron connected to the same source that takes as much current as all the three appliances?

Question 18 :
<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 19 :
Calculate the power used in the 2 Ω resistor in the circuit containing a a 4 V battery in parallel with 12 Ω and 2 Ω resistors.

Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d33273b230584979bbd.PNG' /> Above image is the symbol of ______ in circuit diagram.