 |  DC Circuits 48 Flashcards |  Start |
 | What is the formula for Ohm's Law relating voltage, current, and resistance? |  Card: 1 / 48 |
| V = IR (voltage equals current times resistance) | Card: 2 / 48 |
| True or False: In a series circuit, current is the same through all resistors. | Card: 3 / 48 |
| True. The same current flows through each component in series. | Card: 4 / 48 |
| The algebraic sum of currents at any node equals _____. | Card: 5 / 48 |
| Zero | Card: 6 / 48 |
| Which law states that voltage drops around a closed loop sum to zero? | Card: 7 / 48 |
| C) Kirchhoff's Voltage Law | Card: 8 / 48 |
| What happens to total resistance when resistors are connected in series? | Card: 9 / 48 |
| Total resistance equals the sum of individual resistances. | Card: 10 / 48 |
| For parallel resistors, 1/Rtotal = 1/R₁ + 1/R₂ + _____ | Card: 11 / 48 |
| 1/R₃ + ... + 1/Rₙ | Card: 12 / 48 |
| A 12V source connects to resistors 4Ω and 8Ω in series. What is the total current? | Card: 13 / 48 |
| 1A (I = 12V ÷ 12Ω = 1A) | Card: 14 / 48 |
| True or False: In parallel circuits, voltage is different across each resistor. | Card: 15 / 48 |
| False. Voltage is the same across all parallel resistors. | Card: 16 / 48 |
| What does the current divider rule calculate in parallel circuits? | Card: 17 / 48 |
| How total current splits between parallel branches based on resistance. | Card: 18 / 48 |
| Which analysis method uses mesh currents and KVL? | Card: 19 / 48 |
| B) Mesh analysis | Card: 20 / 48 |
| The Thevenin equivalent circuit consists of a voltage source in _____ with a resistance. | Card: 21 / 48 |
| Series | Card: 22 / 48 |
| How do you find Thevenin resistance when independent sources are present? | Card: 23 / 48 |
| Deactivate all independent sources (short voltage sources, open current sources). | Card: 24 / 48 |
|  Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only | |
| What is the relationship between Norton current and Thevenin voltage? | Card: 25 / 48 |
| Iₙ = Vₜₕ ÷ Rₜₕ | Card: 26 / 48 |
| True or False: Maximum power transfer occurs when load resistance equals source resistance. | Card: 27 / 48 |
| True. Maximum power transfers when Rₗ = Rₜₕ. | Card: 28 / 48 |
| A voltage source 10V with series resistance 5Ω transforms to what current source? | Card: 29 / 48 |
| 2A current source in parallel with 5Ω resistor. | Card: 30 / 48 |
| Which theorem allows analyzing circuits by considering one source at a time? | Card: 31 / 48 |
| C) Superposition | Card: 32 / 48 |
| What is the efficiency when maximum power is transferred to a load? | Card: 33 / 48 |
| 50% (half the power dissipates in source resistance) | Card: 34 / 48 |
| The resistance formula R = ρL/A shows resistance depends on material _____ and geometry. | Card: 35 / 48 |
| Resistivity | Card: 36 / 48 |
| How does temperature typically affect conductor resistance? | Card: 37 / 48 |
| Resistance increases as temperature increases for most conductors. | Card: 38 / 48 |
| True or False: Superposition theorem can be directly applied to calculate power. | Card: 39 / 48 |
| False. Power is not linear, so superposition doesn't apply directly. | Card: 40 / 48 |
| In nodal analysis, what do you assign to the reference node? | Card: 41 / 48 |
| Zero potential (ground) | Card: 42 / 48 |
| What happens to equivalent resistance in a balanced Y-Δ transformation? | Card: 43 / 48 |
| B) RΔ = 3RY | Card: 44 / 48 |
| Two 6Ω resistors in parallel have an equivalent resistance of _____. | Card: 45 / 48 |
| 3Ω | Card: 46 / 48 |
| Why is KVL based on conservation of energy principle? | Card: 47 / 48 |
| Energy gained moving around a closed path must equal energy lost. | Card: 48 / 48 |
| Completed! Keep practicing to master all of them. |  Restart |
