Question

Name the instruments used to measure (i) current (ii) potential difference

Answer 1

Answer:

current measure in ampere (A)

potential difference measure in voltmeter (V)

Answer 2

Answer:

• An ‘ammeter’ is a device useful for the “measuring of electric current” in a circuit.  
• A voltmeter is an electrical instrument that is useful in measuring “electrical potential difference” between the two points in the electric circuit.

• An ammeter is a tool used in ampere units to measure electrical current.
• The trajectory of the current being measured must be linked to an ammeter in sequence.
• The parallel setting of the ammeter will generate a short circuit and will not properly evaluate the current.

• The primary concept of voltmeter is to connect it in parallel in which we want the voltage to be measured.
• “Parallel connection” is useful because the voltmeter is designed to have a ‘very high resistance value’.