Revision: Electromagnetism Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 19 Electromagnetism - Revision Quiz Test your understanding of Electromagnetism here: 1 / 5 1) A beam of electrons enters a region in which there are magnetic and electric fields. The uniform magnetic field is directed downwards. How should a uniform electric field be applied such that the beam of electrons passes straight through the region without deviation? into the plane of the screen upwards along the plane of the screen downwards along the plane of the screen out of the plane of the screen 2 / 5 2) 2010 S4 EOY P1 Q27 In the following diagram, a compass is placed above a current-carrying wire and it is close to a magnet. The Earth's magnetic field may be ignored. If the current flows towards the right, which of the following diagrams shows the direction of the compass needle? ""*;N;}} 3 / 5 3) 2014 S4 EOY P1 Q28 The diagram shows a simple d.c. motor. Which of the following correctly identifies the connection of carbon brushes to the positive terminal of the battery and, the correct value of the torque at the instant shown in the above diagram? carbon brush connected to positive terminal: K value of torque at instant shown: Maximum carbon brush connected to positive terminal: J value of torque at instant shown: Minimum carbon brush connected to positive terminal: K value of torque at instant shown: Minimum carbon brush connected to positive terminal: J value of torque at instant shown: Maximum 4 / 5 4) 2018 S4 EOY P1 Q28 Two current-carrying wires are parallel to each other. Which of the following correctly shows the direction of the forces acting on the two wires? 5 / 5 5) 2010 S4 EOY P1 Q28 The diagram shows an electric bell and its circuit. The materials used in the core of the electromagnet and the armature are: Core of electromagnet: soft ironArmature: steel Core of electromagnet: soft ironArmature: soft iron Core of electromagnet: steelArmature: steel Core of electromagnet: steelArmature: soft iron Your score is Restart quiz
