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EmSAT Physics Flashcards

6 cards from real EMSAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 EmSAT Physics flashcards as text

  1. What is Ohm's Law?

    Answer: V = IR

    Ohm's Law states that voltage (V) equals current (I) times resistance (R): V = IR. It describes the relationship between these three electrical quantities.

  2. What is the SI unit of electrical resistance?

    Answer: Ohm

    The SI unit of electrical resistance is the Ohm (Ω), named after Georg Simon Ohm. It measures how much a component opposes current flow.

  3. In a series circuit, how does current behave?

    Answer: It is the same throughout

    In a series circuit, current is the same at all points. There is only one path for current to flow, so the same current passes through all components.

  4. What happens to total resistance when resistors are connected in parallel?

    Answer: Total resistance decreases

    In parallel circuits, total resistance decreases because adding more paths gives current more ways to flow. The total resistance is less than the smallest individual resistor.

  5. Calculate the power dissipated by a 10 Ω resistor with 2 A flowing through it.

    Answer: 40 W

    Power = I²R = (2)² × 10 = 4 × 10 = 40 W. Alternatively, V = IR = 20 V, then P = VI = 20 × 2 = 40 W.

  6. What converts electrical energy to mechanical energy?

    Answer: Electric motor

    An electric motor converts electrical energy into mechanical (kinetic) energy. A generator does the reverse: it converts mechanical energy into electrical energy.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. emsat.moe.gov.ae — Test delivery, eligibility, time limit, retake fee, retake policy, score release, exam format, exam information · verified Oct 2026
  2. mohesr.gov.ae — Eligibility · verified Oct 2026