Which of the following is used to detect current in a circuit?
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Two identical resistors of 20 ohm each are connected in parallel. This combination, in turn, is connected to a 10 ohm resister. The equivalent resistance of the combination will be
The unit of power used in industry is
If the frequency of a sound wave of given velocity is increased , how will it affect its wavelength?
The energy released at the end of digestion is in the form of
Which of the following devices helps to maintain a potential difference across a conductor?
Which of the following instruments is used to measure electric current?
If a body is whirled in a circle, then the work done on it ___.
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