Correct option is C
Given:
Voltage V = 12V
Current I = 3A
Formula used:
P= V × I (Where P is the Power(W))
Solution:
Substitute the value of voltage and current
P = 12V ×3A = 36W
P= 36W
Thus the correct answer is (C)
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Question
A bulb draws a current of 3 A when connected to a battery of 12 V. The power of the bulb is:
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- 1)A galvanometer can be converted into a voltmeter by connecting it with which of these?
- 2)With reference to conductors, consider the following statements:
1. The valance Band and the conduction band overlap each other.
2. The resistivity of a conductor decreases exponentially with temperature.
3. Conductors conducts the electric current less than semiconductors and greater than insulators.
How many of the above three statements given above are correct? - 3)Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): Gauss's law in magnetostatics and electrostatics are respectively, $\oint\overline{B}\cdot d\overline{S}=0$ and $\oint\overline{E}\cdot d\overline{S}=\frac{Q_{enclosed}}{\epsilon_{0}}.$
Reason (R): Magnetic monopoles do not exist, whereas electric monopoles (isolated charges) exist.
In light of the below given statements choose the most appropriate answer from the options. - 4)
In an Alternating Current (AC) circuit, the phase relationship between current and voltage depends on the circuit elements. Match the entries in Column - I with the appropriate relations in Column - II.
Column-I (Type of Circuit): i. Pure Resistance (R), ii. Pure Capacitance (C), iii. Pure Inductance (L), iv. R-L-C Series Circuit
Column-II (Phase Relationship): p. Current leads voltage by 90°, q. Current and voltage are in same phase, r. Current and voltage may or may not be in same phase, s. Current lags voltage by 90°
Select the correct matching option: - 5)Which of the following combinations will consume more electrical power if connected to the same voltage source?
- 6)The power in the supply line is transferred at high voltage
- 7)The electrical conductivity of a metal decreases with increasing temperature, because
- 8)The current capacity of a fuse wire does not depend
- 9)Hot-wire ammeters are used to measure
- 10)
An electron possesses a negative charge of:
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Similar Questions
- 1)A galvanometer can be converted into a voltmeter by connecting it with which of these?
- 2)With reference to conductors, consider the following statements:
1. The valance Band and the conduction band overlap each other.
2. The resistivity of a conductor decreases exponentially with temperature.
3. Conductors conducts the electric current less than semiconductors and greater than insulators.
How many of the above three statements given above are correct? - 3)Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): Gauss's law in magnetostatics and electrostatics are respectively, $\oint\overline{B}\cdot d\overline{S}=0$ and $\oint\overline{E}\cdot d\overline{S}=\frac{Q_{enclosed}}{\epsilon_{0}}.$
Reason (R): Magnetic monopoles do not exist, whereas electric monopoles (isolated charges) exist.
In light of the below given statements choose the most appropriate answer from the options. - 4)
In an Alternating Current (AC) circuit, the phase relationship between current and voltage depends on the circuit elements. Match the entries in Column - I with the appropriate relations in Column - II.
Column-I (Type of Circuit): i. Pure Resistance (R), ii. Pure Capacitance (C), iii. Pure Inductance (L), iv. R-L-C Series Circuit
Column-II (Phase Relationship): p. Current leads voltage by 90°, q. Current and voltage are in same phase, r. Current and voltage may or may not be in same phase, s. Current lags voltage by 90°
Select the correct matching option: - 5)Which of the following combinations will consume more electrical power if connected to the same voltage source?
- 6)The power in the supply line is transferred at high voltage
- 7)The electrical conductivity of a metal decreases with increasing temperature, because
- 8)The current capacity of a fuse wire does not depend
- 9)Hot-wire ammeters are used to measure
- 10)
An electron possesses a negative charge of:
