Current Electricity

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Current Electricity

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(1) The SI unit of electric current

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(a) Ampere

(b) Volt

(d) Faraday

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2) The instrument is used for measuring electric current is

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(a) Ammeter

(b) Galvanometer

(d) Potentiometer

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3) The resistance of a conductor is directly proportional to its

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(a) Cross section area

(b) Length

(d) Density

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4) The instrument is used for measuring potential difference is

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(a) Ammeter

(b) Galvanometer

(d) Potentiometer

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(5) The charge of one electron is

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(a) 1.6 × 10⁻¹⁹ C

(b) 1.6 × 10⁻¹⁶ C

(d) 1.6 × 10⁻¹¹ C

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6) The flow of electrons through a conductor from negative terminal to positive terminal is known as

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(a) Electric potential

(b) Electric current

(d) All of the above

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7) The unit of potential difference is

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(a) Volt

(b) Ohm

(d) Faraday

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8) 1 kV (Kilovolt) is

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(a) 10⁶ V

(b) 10³ V

(d) 10⁻⁶ V

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9) The relation between potential difference(V) and current (I) was discovered by ----

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(a) Newton

(b) Ampere

(d) Ohm

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10) Current can flow easily through a substance is called

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(a) Resistance

(b) Conductance

(d) None of these

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