hange the length of the wire through which the
measured current passes.
d) A rheostat is a variable resistor .
e) A rheostat is used to change the resistance of circuit.
f) A rheostat consists of a coil and a switch.
Questions:
1. What type of resistor is a rheostat?
2. What is a rheostat used for?
3. In what way does a rheostat vary the value of current?
4. What elements does a rheostat consist of?
5. In what way are the terminals connected with the load?
6. What is the function of the switch?
Answers:
a) When a rheostat is used its terminals are connected in series with the load.
b) A rheostat is used to change the resistance of circuit and in this way to vary
the value of current.
c) The switch is used to change the length of the wire through which the
measured current passes.
d) A rheostat is a variable resistor .
e) A rheostat is used to change the resistance of circuit.
f) A rheostat consists of a coil and a switch.
Страницы: << < 11 | 12 | 13