Unit 17 Electric circuits Solved MCQ'S | Solved All NUMERICALS | class 10 Physics NBF New book

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   • Federal Board Class 10  

Unit 16 Numericals 👇
   • Unit 16 Solved Current Electricity MCQ'S |...  



00:00 MCQ'S
UNIT 17 ELECTRIC CIRCUITS

NUMERICAL RESPONSE QUESTIONS
unit 17 electric Circuits National book foundation

07:58 Q1. A fan, a heater and an LED bulb are connected to a battery as shown in the figure. 10ohm , 6ohm , 18ohm
(a) Find equivalent resistance
(b) Calculate the current passing through each device


12:04 Q2. Three resistors R1 = 8ohm , R2 = 12 Ohm and R3 = 18ohm are connected in parallel. Calculate the total resistance of the combination.

14:59 Q3. A device with a resistance of 10ohm is connected to a 120 V power source. Calculate the power consumed by the device.

15:49 Q4. A light bulb with a power rating of 60 W is switched on for 5 hours. Calculate the electrical energy consumed by the light bulb.

16:54 Q5. One hundred identical cells are connected in series, each of emf 0.2 V. What will the resultant emf when these identical cells are connected in series? When parallel?

18:38 Q6. In the circuit shown, what is the value of the total resistance of the circuit between points A and B?

21:35 Q7. Calculate the
(a) power consumed,
(b) current flowing through and
(c) electrical energy consumed
by the bulb in the given figure.
v=120V ,R =50ohm ,t= 5h


23:55 Q8. Calculate the total resistance of the circuit shown in the figure:
(The figure shows a 10 V battery. It is connected to a parallel combination of two 12.5ohm resistors. This parallel combination is in series with a 4.5ohm resistor.)

MULTIPLE CHOICE QUESTIONS

Two resistances of 4 ohm are connected in parallel and this combination is connected to another 6 ohm resistance in series. The equivalent resistance will be:
In series connection of resistors, the current across each resistor:
A resistor's first three colours are brown, black and red, its value is:
The relation for electric power in a circuit is P =
In the given figure, the current passing through 6ohm resistor is: (The figure shows a circuit with a 4ohm resistor and a 6ohm resistor in parallel. This combination is connected to a current source, and the total current is indicated as I = 1.2A before it splits into the parallel branches.)
When four cells, each with an emf of 0.5 V, are connected in parallel, the net emf is:
The purpose of grounding electrical systems is to:
The purpose of a circuit breaker is to:
Which electrical element control the flow of the electric current in a circuit?
A and B are two bulbs connected in parallel. A is glowing brighter than B, then the relation between R_A and R_B is:
The S.I unit for electrical power is:
A wire of resistance R is divided in 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be: