11 JEE Main 2020 Alternating Current previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 previous-year questions from the Alternating Current chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Alternating Current chapter hub.
A part of a complete circuit is shown in the figure. At some instant, the value of current I is 1 A and it is decreasin…
Two identical capacitors A and B , charged to the same potential 5 V are connected in two different circuits as shown b…
In L C circuit the inductance L = 40   mH and capacitance C = 100   μF . If a voltage V t = 10 s i n 314…
An emf of 20   V is applied at time t = 0 to a circuit containing in series 10   m H inductor and 5   &#…
A series L - R circuit is connected to a battery of emf V . If the circuit is switched on at t = 0 , then the time at w…
An AC circuit has R = 100 Ω , C = 2 μ F and L = 80 mH , connected in series. The quality factor of the circui…
As shown in the figure, a battery of emf ∈ is connected to an inductor L and resistance R in series. The switch i…
In a series LR circuit, power of 400   W is dissipated from a source of 250   V ,   50   Hz . The p…
Magnetic materials used for making permanent magnets P and magnets in a transformer T have different properties of the…
A L C R circuit behaves like a clamped harmonic oscillator. Comparing it with a physical spring-mass damped oscillator…
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