(b) Figure 2.2 shows the circuit of a battery polarity tester using a light emitting diode (LED) and a resistor R. The LED's has a forward voltage drop of 1.4 V. The battery is connected between terminals A and B. A Ba R Figure 2.2 (i) Which connection does the positive terminal of the battery have to be connected to for the LED to glow - A or B? (ii) If the LED is glowing, calculate the value of resistor R so the current is 10 mA when the battery has a voltage of 6 V. (iii) Calculate the power dissipated in the resistor for the conditions outlined in ii).

Discuss in detail whether the incident energy can be sampled or not with pick up probe atport ‘4

Two student measure the density of an unknown metal three times each Below the data Student1 Student2 6.34 g/cm? 7.11g/cm³ 7.19 6.31 6.30 7.12 The accepted value for the density is 7.08 g/cm . Calculate percent error for student1 10% 11% O 12% 13% 14% 15% 16% Other:

Chemistry 1. Using the partial chromatogram below: a. determine the resolution between the two solute bands. b. Why would you need a ruler to solve this problem? Explain. 350 400 450 retention time (s) detector's response 300

Based on this diagram, complete the following timing diagrams. x transition occurs on the falling edge of the clk. Initial state is 00.Timing diagram is for clock cycles 1-4. Please go into one of the diagrams in thorough written detail so I may understand it. Schematic, and state diagram included. | no clk 0/0 0/0 1/0

Determine the Ib Determine the Ic Determine the Vce Determine the Vc Determine the Vb Determine the Ve.

0.1 Give a short answer for only Six of the following 1. Explain the construction of turbine meter and mention for what we use it. 2. Mention the Applications of Pyroelectric sensors. 3. Explain briefly Hall effect sensor's application by measuring the fluid level in a container. 4. Explain how could we use potentiometer to measure linear displacement and angular displacement. 5. According to electrical circuits and electric fundamentals what's the evident difference between Eddy current proximity sensor and Inductive proximity sensor? 6. What's the purpose of putting an inner track with only one hole in optical sensor? 7. What's the reason behind using Wheatstone bridge with strain gauge sensor?

Solve using KCL

PLEASE ANSWER BOTH QUESTIONS FOR UPVOTES. NO UPVOTE IF ONLY ONE HAS AN ANSWER. PUT ONLY BRIEF EXPLANATIONS ON CHOOSING THE CORRECT ANSWERS. THANK YOU

SUBJECT: CERCIT