Who invented simple battery?
Who invented simple battery?
- A
Volta
- B
Coulomb
- C
Ampere
- D
Ohm
Similar Questions
Define current. Give its $SI$ unit.
Define current. Give its $SI$ unit.
$(a)$ Name an instrument that measures potential difference between two points in a circuit. Define the unit of potential difference in terms of SI unit of charge and work. Draw the circuit symbols for $(i)$ variable resistor, $(ii)$ a plug key which is closed one.
$(b)$ Two electric circuits $I$ and $II$ are shown below
$(i)$ Which of the two circuits has more resistance ?
$(ii)$ Through which circuit more current passes ?
$(iii)$ In which circuit, the potential difference across each resistor is equal ?
$(iv)$ If $R_{1}>R_{2}>R_{3}$, in which circuit more heat will be produced in $R_{1}$ as compared to other two resistors ?
$(a)$ Name an instrument that measures potential difference between two points in a circuit. Define the unit of potential difference in terms of SI unit of charge and work. Draw the circuit symbols for $(i)$ variable resistor, $(ii)$ a plug key which is closed one.
$(b)$ Two electric circuits $I$ and $II$ are shown below
$(i)$ Which of the two circuits has more resistance ?
$(ii)$ Through which circuit more current passes ?
$(iii)$ In which circuit, the potential difference across each resistor is equal ?
$(iv)$ If $R_{1}>R_{2}>R_{3}$, in which circuit more heat will be produced in $R_{1}$ as compared to other two resistors ?
Out of the two, a toaster of $1\, kW$ and an electric heater of $2\, kW$, which has a greater resistance ?
Out of the two, a toaster of $1\, kW$ and an electric heater of $2\, kW$, which has a greater resistance ?
An electric kettle consumes $1\, kW$ of electric power when operated at $220\, V$. A fuse wire of what rating (in $A$) must be used for it?
An electric kettle consumes $1\, kW$ of electric power when operated at $220\, V$. A fuse wire of what rating (in $A$) must be used for it?
An electric kettle of $2 kW$ -works for $2 h$ daily. Calculate the $(a)$ energy consumed in $SI$ and commercial units $(b)$ cost of running it in the month of June at the rate of ₹ $3.00$ per unit.
An electric kettle of $2 kW$ -works for $2 h$ daily. Calculate the $(a)$ energy consumed in $SI$ and commercial units $(b)$ cost of running it in the month of June at the rate of ₹ $3.00$ per unit.