alleryElectric current is defined as the rate of flow of:
- mass
- electric charge
- energy
- voltage
Show answer and solution
Correct answer: B. electric charge
I = dq/dt; charge per unit time.
NEET UG Current Electricity — practice questions
Explore 163 free Current Electricity questions in NEET UG Physics. Open each question or exercise to read its content, reference answers and available explanation.
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Electric current is defined as the rate of flow of:Read the answer and worked solution →The SI unit of electric current is the:Read the answer and worked solution →Ohm's law (for a conductor at constant temperature) states that V is proportional to:Read the answer and worked solution →The SI unit of resistance is the:Read the answer and worked solution →Resistance R of a uniform wire of length l, area A, resistivity ρ is:Read the answer and worked solution →If a wire of resistance R is stretched to twice its length (volume conserved), its new resistance becomes:Read the answer and worked solution →Conductors with metallic bonding have resistivity that, with rising temperature, typically:Read the answer and worked solution →For semiconductors, the temperature coefficient of resistance is generally:Read the answer and worked solution →Drift velocity v_d of free electrons in a conductor relates to current density J as (n = number density, e = electronic charge):Read the answer and worked solution →Resistors of values R₁ and R₂ connected in series give equivalent resistance:Read the answer and worked solution →Resistors of values R₁ and R₂ in parallel give equivalent resistance:Read the answer and worked solution →Two 6 Ω resistors in parallel give an equivalent resistance of:Read the answer and worked solution →Kirchhoff's junction (current) rule is a statement of:Read the answer and worked solution →Kirchhoff's loop (voltage) rule is a statement of:Read the answer and worked solution →The EMF of a cell is the potential difference across its terminals when the current drawn is:Read the answer and worked solution →For a battery of EMF ε and internal resistance r supplying current I, terminal voltage V equals:Read the answer and worked solution →Power dissipated in a resistor R carrying current I is:Read the answer and worked solution →Heat produced in a resistor follows Joule's heating law H equals:Read the answer and worked solution →In a Wheatstone bridge at balance, the relation between resistances is:Read the answer and worked solution →A galvanometer is converted into an ammeter by connecting a small resistance:Read the answer and worked solution →A galvanometer is converted into a voltmeter by connecting a large resistance:Read the answer and worked solution →An ideal ammeter has resistance:Read the answer and worked solution →An ideal voltmeter has resistance:Read the answer and worked solution →For three identical resistors R combined in parallel, the equivalent resistance is:Read the answer and worked solution →A 100 W, 220 V bulb has resistance (when operating):Read the answer and worked solution →Resistivity has SI unit:Read the answer and worked solution →Conductivity σ is related to resistivity ρ by:Read the answer and worked solution →The drift velocity of electrons in a conductor under an electric field E is proportional to:Read the answer and worked solution →In a series combination of resistors, the same quantity that is shared by all resistors is the:Read the answer and worked solution →A resistor carries a current of 2 A when a potential difference of 10 V is applied across it. Its resistance is:Read the answer and worked solution →
Worked practice questions
The SI unit of electric current is the:
- ampere
- ohm
- coulomb
- volt
Show answer and solution
Correct answer: A. ampere
1 A = 1 C/s.
Ohm's law (for a conductor at constant temperature) states that V is proportional to:
- I²
- √I
- 1/I
- I
Show answer and solution
Correct answer: D. I
V = IR; ratio V/I = R is constant.
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