Physics-
General
Easy
Question
X and Y are large, parallel conducting plates closed to each other. Each face has an area A. X is given a charge Q.Y is without any charge. Points A, B and C are as shown in figure.
- The field at B is
- The field at A and C are of the same magnitude, but in opposite directions.
- The fields at A,B and C are of the same magnitude.
- All of the above
The correct answer is: All of the above
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A physics lab is designed to study the transfer of electrical energy from one circuit to another by means of a magnetic field using simple transformers. Each transformer has two coils of wire electrically insulated from each other but wound a round a common core of ferromagnetic material. The two wires are close together but do not touch each other
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Students collected the following data comparing the number of turns per coil (N), the voltage (V) and the current (I) in the coils of three transformers.
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Students collected the following data comparing the number of turns per coil (N), the voltage (V) and the current (I) in the coils of three transformers.
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Students collected the following data comparing the number of turns per coil (N), the voltage (V) and the current (I) in the coils of three transformers.
A transformer with 40 turns in its primary coil is connected to a 120 V AC source. If 20 W of power is supplied to the primary coil, how much power is developed in the secondary coil
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Students collected the following data comparing the number of turns per coil (N), the voltage (V) and the current (I) in the coils of three transformers.
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The primary coil is connected to a sorce of alternating current. The secondary coil is connected to resistor such as a light bulb. The AC source produces an oscillating voltage and current in the primary coil that produces an oscillating magnetic field in the core material. This in turn induces an oscillating voltage and AC current in the secondary coil
Students collected the following data comparing the number of turns per coil (N), the voltage (V) and the current (I) in the coils of three transformers.
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