CBSE Board Class X Science Sample Paper - 3 Term 2_2
Authored by Aishwaria Murthy
Science, Chemistry, Physics
10th Grade
Used 4+ times
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101 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An electric oven of 2kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect? Explain. What information is given in the numerical.
Power (P) = 2kw =2000W
Current (I) = 5A
Voltage (V) = 220V
Power = current × voltage
therefore P = I × V
Current = Power/voltage
I = P/V
I = 2000/220
I = 9.0909 A
As the amount of current flowing in the conductor is more than 5 A which is the safe limit, then the fuse will get broken and hence the circuit will get open.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An electric oven of 2kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect? Explain. What is the formula for power?
Power (P) = 2kw =2000W
Current (I) = 5A
Voltage (V) = 220V
Power = current × voltage
therefore P = I × V
Current = Power/voltage
I = P/V
I = 2000/220
I = 9.0909 A
As the amount of current flowing in the conductor is more than 5 A which is the safe limit, then the fuse will get broken and hence the circuit will get open.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An electric oven of 2kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect? Explain. How will you calculate Current?
Power (P) = 2kw =2000W
Current (I) = 5A
Voltage (V) = 220V
Power = current × voltage
therefore P = I × V
Current = Power/voltage
I = P/V
I = 2000/220
I = 9.0909 A
As the amount of current flowing in the conductor is more than 5 A which is the safe limit, then the fuse will get broken and hence the circuit will get open.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An electric oven of 2kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect? Explain. What is the value of current?
Power (P) = 2kw =2000W
Current (I) = 5A
Voltage (V) = 220V
Power = current × voltage
therefore P = I × V
Current = Power/voltage
I = P/V
I = 2000/220
I = 9.0909 A
As the amount of current flowing in the conductor is more than 5 A which is the safe limit, then the fuse will get broken and hence the circuit will get open.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An electric oven of 2kW power rating is operated in a domestic electric circuit that has a current rating of 5A. If the supply voltage is 220V, what result do you expect? Explain. When will the circuit will get open?
Power (P) = 2kw =2000W
Current (I) = 5A
Voltage (V) = 220V
Power = current × voltage
therefore P = I × V
Current = Power/voltage
I = P/V
I = 2000/220
I = 9.0909 A
As the amount of current flowing in the conductor is more than 5 A which is the safe limit, then the fuse will get broken and hence the circuit will get open.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If three resistors of 6 Ω, 7 Ω and 10 Ω are connected in series. Calculate the equivalent resistance in the circuit.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the equivalent or total resistance (Re) across this circuit?
3 kΩ
10 kΩ
13 kΩ
18 kΩ
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