What is the electric charge passing through a cross-sectional area of the conductor per unit time called?
What is the electric charge passing through a cross-sectional area of the conductor per unit time called?
- A
Electric potential
- B
Electric current
- C
Electric power
- D
Resistance
Similar Questions
In a household, $5$ tube lights of $40\, W$ each are used for $5$ hours and an electric press of $500 \,W$ for $4$ hour everyday. Calculate the total energy consumed by the tube lights and press in a month of $30$ days.
In a household, $5$ tube lights of $40\, W$ each are used for $5$ hours and an electric press of $500 \,W$ for $4$ hour everyday. Calculate the total energy consumed by the tube lights and press in a month of $30$ days.
Define power. State the difference between $1$ watt and $1$ watt hour. Establish the relationship between unit of electric energy and $SI$ unit of energy. An electric heater rated $1000\, W / 220 \,V$ operates $2$ hours daily. Calculate the cost of energy to operate for $30$ days at the rate of ₹ $5.00$ per $k W h$
Define power. State the difference between $1$ watt and $1$ watt hour. Establish the relationship between unit of electric energy and $SI$ unit of energy. An electric heater rated $1000\, W / 220 \,V$ operates $2$ hours daily. Calculate the cost of energy to operate for $30$ days at the rate of ₹ $5.00$ per $k W h$
$(a)$ State $Ohm's$ law. Express it mathematically.
$(b)$ Write symbols used in electric circuits to represent
$(i)$ variable resistance.
$(ii)$ voltmeter.
$(c)$ An electric bulb is rated $220, V$ and $100\, W$ When it is operated on $110\, V ,$ what will be the power consumed ?
$(a)$ State $Ohm's$ law. Express it mathematically.
$(b)$ Write symbols used in electric circuits to represent
$(i)$ variable resistance.
$(ii)$ voltmeter.
$(c)$ An electric bulb is rated $220, V$ and $100\, W$ When it is operated on $110\, V ,$ what will be the power consumed ?
State with the help of a circuit diagram an activity to find the resistance ${ }^{\prime} R^{\prime}$ of a given wire. A current of $0.2\, A$ passes through a resistor of $20 \Omega$. Find the potential difference across its ends.
State with the help of a circuit diagram an activity to find the resistance ${ }^{\prime} R^{\prime}$ of a given wire. A current of $0.2\, A$ passes through a resistor of $20 \Omega$. Find the potential difference across its ends.
$(a)$ 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 ?