Table of Contents
- 1 What is the formula to find the reading of voltmeter?
- 2 What is the reading of voltmeter is connected across the cell even?
- 3 How is a voltmeter connected across a resistance?
- 4 What is voltmeter reading?
- 5 When cells are connected in parallel then?
- 6 When a high resistance voltmeter is directly connected?
- 7 Is voltmeter connected across the current path?
- 8 How is a voltmeter connected in a circuit to measure potential difference between two points?
What is the formula to find the reading of voltmeter?
The reading of the voltmeter can be determined by finding the potential difference across the 2Ω resistance by using the value of current in the circuit. V=IR, here V is the potential difference across a resistance R through which a current I is flowing.
What is the reading of voltmeter is connected across the cell even?
A reading is taken on a high resistance voltmeter, when a cell is connected across it. When the terminals of the cell are also connected to a resistance. Hence, 1.1 ohm is the correct answer.
When connected across the terminals of a cell a voltmeter measures?
5V
When connected across the terminals of a cell, a voltmeter measures 5V and a connected ammeter measures 10 A of current. A resistance of 2 ohms is connected across the terminals of the cell.
How is a voltmeter connected across a resistance?
A voltmeter is connected in parallel at the two points between which the potential difference is to be measured. Therefore, a voltmeter needs to have a large resistance so that very little current is diverted through it.
What is voltmeter reading?
voltmeter, instrument that measures voltages of either direct or alternating electric current on a scale usually graduated in volts, millivolts (0.001 volt), or kilovolts (1,000 volts). Many voltmeters are digital, giving readings as numerical displays.
How will the reading of V change if it is connected between B and C justify your answer?
In a series circuit connection the voltage gets divided. Therefore when the voltmeter is connected between B and C the reading of the voltmeter would change.
When cells are connected in parallel then?
Therefore when cells are connected in parallel, the voltage remains the same, and internal resistance decreases, hence the current increases. Therefore option 3 is correct.
When a high resistance voltmeter is directly connected?
When a high resistance voltmeter is connected directly across a resister its reading is 2 V. An electric cell is sending the current of 0.4A, (measured by an ammeter) in the electric circuit in which a rheostat is also connected to vary the current.
How is a voltmeter connected to a cell?
Attach two long, flexible leads to the voltmeter. Connect the voltmeter leads across one cell, then across two cells, then across three….The voltmeter as a cell
- Cells, 1.5 V, 3.
- Lamp with lamp holders, 3 (e.g. 1.25 V, 0.5 A)
- Leads, 4 mm, 9.
- Voltmeter, 0 to 5 V, DC.
- Ammeter, 0 to 1 A, DC.
Is voltmeter connected across the current path?
A voltmeter is connected across the current path.
How is a voltmeter connected in a circuit to measure potential difference between two points?
A voltmeter is a device that measures the potential difference across two points in the circuit. It is connected in parallel to the two points in the circuit. It must be connected in parallel and not to be connected in series because we want to measure the potential difference across two difference points.