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EMF

When an ammet...

Question

When an ammeter connected between the anode and cathode idicates a zero reading, then the emf of the cell is zero.

A

True

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B

False

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Solution

The correct option is A True

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Q. A voltmeter and an ammeter are connected in series to an ideal cell of emf E. The voltmeter reading is V and the ammeter reading is l

Q. An alternating voltage

V = V_{0} sin ω t

is connected to a capacitor of capacity

C_{0}

through an A.C. ammeter of zero resistance. The reading of ammeter is :

Q. Consider the following relations for emf of an electrochemical cell :

(i) EMF of cell = (Oxidation potential of anode) - (Reduction potential of cathode)
(ii) EMF of cell = (Oxidation potential of anode) + (Reduction potential of cathode)
(iii) EMF of cell = (Reduction potential of anode) + (Reduction potential of cathode)
(iv) EMF of cell = (Oxidation potential of anode) - (Oxidation potential of cathode)

Which of the above relation(s) is correct?

Q. Consider the following relations for emf of an electrochemical cell:

(i) EMF of cell = (Oxidation potential of anode) - (Reduction potential of cathode) (ii) EMF of cell = (Oxidation potential of anode) + (Reduction potential of cathode) (iii)) EMF of cell = (Reductional potential of anode) + (Reduction potential of cathode) (i v)) EMF of cell = (Oxidation potential of anode) - (Oxidation potential of cathode)

Q. Assertion :EMF of the cell is the potential difference between the electrode potentials of the cathode and anode when no current is drawn through the cell. Reason: Anode is kept on the right side and cathode on the left side while representing the galvanic cell.

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