Question 1 :
Two lamps, one rated at 100W-220 V and other 60 W-220 V are connected in parallel to electric mains supply. What current is drawn from the line, if supply voltage is 220 V ?

Question 2 :
What is the minimum resistance which can be made using five resistors each of $\frac{1}{5}\Omega$ ?

Question 3 :
In an electrical circuit three incandescent bulbs A, B and C of rating 40 W, 60 W and 100 W respectively are connected in parallel to an electric source . Which of the following is likely to happen regarding their brightness ?

Question 4 :
State whether the statement is TRUE or FALSE : If a current larger than a specified value flows in a circuit, temperature of fuse wire increases to its melting point. The fuse wire melts and the circuit breaks to protect electrical appliances.

Question 5 :
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 6 :
How much energy is given to each coulomb of charge passing through a 6 V battery?

Question 8 :
How many 176 $\Omega$ resistors (in parallel) are required to carry 5 A on a 220 V line?

Question 9 :
Which among iron and mercury is a better conductor? If resistivity of iron is $10.0 × 10^{–8}$ Ω m and resistivity of mercury is $94.0 × 10^{–8}$ Ω m.

Question 11 :
A battery of 9 V is connected in series with resistors of 0.2 $\Omega$, 0.3 $\Omega$, 0.4 $\Omega$ , 0.5 $\Omega$ and 12 $\Omega$, respectively. How much current would flow through the 12 $\Omega$ resistor?

Question 12 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d30273b230584979bb9.PNG' /> Above image is the symbol of ______ in circuit diagram.

Question 13 :
An electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and the voltage is 220 V. What is the current when heating is at maximum rate?

Question 14 :
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be

Question 15 :
How is voltmeter connected in circuit to measure the potential difference between the two points?

Question 16 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cdc273b230584979b58.JPG ' /> In the above circuits , heat produced in the resistor or combination of resistors connected to a 12 V battery will be

Question 17 :
State true or false: Series arrangement is used for domestic circuits.

Question 18 :
An electric heater of resistance 8 ohm draws 15 A from the mains for 2 h. Calculate the rate at which heat is developed in the heater.

Question 19 :
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 readings in ammeter?

Question 20 :
An electric motor takes 5 A from a 220 V line. What is the power of the motor?