Current through a Wire

Q. When an electric current is passed, electrons move:​

1. from High potential to Low potential​
2. in the direction of the current​
3. from Low potential to High potential​
4. perpendicular to the direction of current

Q.

Define electric current. Give its SI unit and formula.

Q. The amount of electric charge flowing through a cross-section area of a conductor in unit time is termed as:

1. Electric current
2. Electric resistance
3. Electric potential
4. Potential difference

Q. If a charge of $600C$ flows through the cross-section of a conducting wire in $5\text{minutes}$, what is the value of the current that flows through the wire?

1. $1.42A$
2. $1.5A$
3. $2.5A$
4. $2A$

Q.

In a conductor, electrons are flowing from $B$ to $A$. What is the direction of conventional current? Give justification for your answer. A steady current of $1ampere$ flows through a conductor. Calculate the number of electrons that flows through any section of the conductor in 1 second.

Q. 300 C charge passes through the cross section A of the conductor in 5 minutes as shown.​

Calculate the current flowing in the conductor.​

1. 1 A
2. 2 A
3. 0.5 A
4. 5 A

Q. In a part of a circuit shown in figure, the potential difference between points A and B (V_A – V_B) will be

चित्र में दर्शाए गए परिपथ के किसी भाग में, बिन्दुओं A व B के मध्य विभवान्तर (V_A – V_B) होगा

1. 24 V
2. 27 V
3. 36 V
4. 48 V

Q.

SI unit of electric current is ________.

Q.

What is the difference between a potentiometer and a voltmeter?

Q.

Give one word for the following.

The rate of electric charge through a conductor.

Q.

A non-conducting ring of radius $R$ has charge $Q$ distributed unevenly over it. If it rotates with an angular velocity $\omega$, the equivalent current will be

Q.

$1$ volt equals

1. $1$ joule

2. $1$ joule per coulomb

3. $1$ coulomb per metre

4. $1$ newton per coulomb

Q.

Use the following information to answer the next question.

The given figure shows a circuit with a resistor R connected to a cell of voltage V.

Which statement is correct regarding the flow of charges through resistor R?

1. Only electrons travel from P to Q, while no flow of protons takes place

2. Electrons travel from Q to P, while protons travel from P to Q

3. Only electrons travel from Q to P, while no flow of protons takes place

4. Electrons travel from P to Q, while protons travel from Q to P

Q.

If two points are maintained at 5V each and a resistor of 10 ohms is connected across them, what is the current flowing between those two points?

1. 0.5 A

2. 50 A

3. Zero

4. Infinity

Q.

If two points are maintained at 5V each and a resistor of 10 ohms is connected across them, what is the current flowing between those two points?

1. Zero

2. 0.5 A

3. 50 A

4. Infinite

Q.

In what time (in seconds) should a charge of 10 C flow between the two terminals so as to maintain a constant current of 100 A?

1. $\frac{1}{10}s$

2. $10s$

3. $110s$

4. $\frac{1}{110}s$

Q.

The SI unit of current is_______.

1. ampere

2. coulomb

3. pascal

4. watt

Q. If a charge of $1800C$ flows through the cross-section of a conducting wire in $10\text{minutes}$, what is the value of the current that flows through the wire?

Q.

If electric field intensity in a region is zero, then electric potential at all the points in the region is ____.

Q.

Define one ampere.

Q. If a charge of $600C$ flows through the cross-section of a conducting wire in $5\text{minutes}$, what is the value of the current that flows through the wire?

1. $1.42A$
2. $1.5A$
3. $2.5A$
4. $2A$

Q.

Electric current is expressed by the number of neutrons flowing through a particular area per unit time.

1. True

2. False

Q. Which of the following is a bad conductor of electricity?

1. ORS drink
2. Distilled water
3. Tap water
4. Salt water

Q. Choose the correct option:
Statement 1: The following figure correctly represents the conventional direction of flow of current.
Statement 2: The actual direction of flow of electrons is opposite to the conventional direction of flow of current.

1. Statement 1 is incorrect and statement 2 is correct.
2. Both statements are incorrect.
3. Both statements are correct.
4. Statement 1 is correct and statement 2 is incorrect.

Q.

When a potential difference is applied across the resistor, the movement of electrons will be:

1. parabolic

2. circular

3. straight line

4. zig - zag

Q.

One coulomb of charge flows through any cross section of a conductor in one second. Select the correct option as per the given statement.

1. Resistance of the conductor is $2\Omega$.

2. $2A$ of current flows through that conductor.

3. $1A$ of current flows through that conductor.

4. Resistance of the conductor is $1\Omega$.

Q.

According to the conventions direction of flow of electric current is taken from positive terminal to negative terminal of battery, which is opposite to the flow of

___.

Q. Current travels with same speed in all the conductors irrespective of the material of conductor.

1. False
2. True