What is the change in the voltmeter reading when the number of cells increases?

A possible answer: Increasing the number of cells connected in parallel will increase the current and potential difference in the circuit.

What happens to the reading in the ammeter?

Current has inversely relationship with resistance. Resistances are connected in series, then the value of resistance increases which decreases the value of current, that’s why the reading of ammeter also decreases.

What affects voltmeter reading?

The very act of connecting the voltmeter to the circuit makes it part of the circuit, and the voltmeter’s own resistance alters the resistance ratio of the voltage divider circuit, consequently affecting the voltage being measured.

How does the reading in the voltmeter changes?

Therefore when the voltmeter is connected between B and C the reading of the voltmeter would change. Since we know the total voltage flowing in the circuit we will first find out the total resistance in a series connection and then find out the current flowing in the circuit.

Was the reading in the ammeter increasing or decreasing?

Answer: The ammeter reading decreases to one – half when the length of the wire is doubled. The ammeter reading is increased when a thicker wire of the same material and of the same length is used in the circuit.

When adding battery to the circuit what does it have to do with the electrons?

When the battery is connected to a circuit, electrons produced by the chemical reaction at the anode flow through the circuit to the cathode. At the cathode, the electrons are consumed in another chemical reaction.

What is the relation between voltmeter reading and ammeter reading?

Ammeters and voltmeters are cleverly designed for the way they are used. Ammeters measure the current of a circuit, and voltmeters measure the voltage drop across a resistor. It is important in the design and use of these meters that they don’t change the circuit in such a way as to influence the readings.

What happens to current when a cell is added to battery?

A: If you add the cell in series then the voltage increases while the circuit resistance remains the same so then the current must increase. If the cells of the battery are in parallel and the added cell is in parallel then the voltage, resistance and current remain the same but the circuit will operate longer by the addition of the cell.

Why does the ammeter reading increase when adding more lamps?

If the ammeter is connected between the source and the parallel combination of lamps (as in ammeter IS1 in the circuit below), the ammeter reading will increase as you add more lamps, corresponding to the sum of the individual currents drawn by each lamp, up to the maximum current that the source can supply.

What happens when you put more cells in a series circuit?

The current in this series circuit increases as more cells are added Current is not used up If you put more lamps into a series circuit, the lamps will be dimmer than before because less current will flow through them. You might think that the current gets less as it flows through one component after another, but it is not like this.

What is the effect of high resistance in series with ammeter?

High resistance in series with ammeter will reduce deflection for same voltage across the branch where ammeter is connected. If the resistance is very high, this combination will reduce the circuit current drastically.

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