Check all that apply. An ammeter is used to measure current. An ammeter must be placed in parallel with a resistor to measure the current through the resistor. An ammeter has a large internal resistance. A voltmeter has a small internal resistance. A voltmeter is used to measure voltage. A voltmeter must be placed in parallel with a resistor to measure the voltage across the resistor. Request Answer

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Cheeely7498 Cheeely7498

02-03-2020
Physics

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Check all that apply. An ammeter is used to measure current. An ammeter must be placed in parallel with a resistor to measure the current through the resistor. An ammeter has a large internal resistance. A voltmeter has a small internal resistance. A voltmeter is used to measure voltage. A voltmeter must be placed in parallel with a resistor to measure the voltage across the resistor. Request Answer

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jacknjill jacknjill · Answer 1 · 2020-03-10T09:20:45+01:00

Out of all given choices, the following statements are true:

An ammeter is used to measure current.
A voltmeter is used to measure voltage.
A voltmeter must be placed in parallel with a resistor to measure the voltage across the resistor.

Options A, E, and F

Explanation:

An instrument by which the current in a circuit is measured is called ammeter whereas an instrument in which voltage is measured in a circuit is called a voltmeter . The ammeter is placed in series with the resistor while the voltmeter is placed in parallel with the resistor.

For the option B, since the ammeter must be placed in series with the resistor to measure current, it is false. Option C is false because an ammeter has zero internal resistance. Option D is also false because a voltmeter has a high internal resistance and is actually infinite.